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Popular Signal Isolators Comparison

  • The following chart should help when choosing an APCS Signal Isolator.
  • The specifications will vary between the modules listed, and will be the same or exceed the option listed.
  • Link selectable process inputs include, but are not limited to, the following ranges
    (4-20mA, 0-20mA, 0-1V, 0-5V, 1-5V, 0-10V)
  • Link selectable process outputs include, but are not limited to, the following ranges
    (4-20mA, 0-20mA, 0-5V, 1-5V, 0-10V)

Comparison Chart

Option / Model
SI132 SI231 SSP235 SI236 DSI732 QLPI731
240Vac Supply
Y
-
-
-
Y
-
8-60Vdc Supply
Y
-
Y
Y
Y
-
Loop powered (4-20mA output)
-
Y
-
-
-
Y
Link selectable process inputs
Y
Y
Y
Y
Y
-
Link selectable process outputs
Y
-
Y
Y
Y
-
One input, two outputs
-
-
Y
-
-
-
Two inputs, two outputs
-
-
-
-
Y
-
Four inputs, four outputs
-
-
-
-
-
Y
Case width (mm)
52
22.5
22.5
22.5
60
60

Additional reading about the options